Cultivator



(No Model.) v 2 Sheets-Sheet 1 W. M. ROBERTS.

'GULTIVATOR.

No. 358,078. Patented Feb. 22; 1887.

N, "1615 mowmho n mr. Wuhinglon, n. c

(No Mod el.) 2 Sheets-Sheet 2.

" ROBERTS. CULTIVATOR.

Patented Feb. 22, 1887.

7 WITNESSES I HINVENTOR Q By kflttorney I N. PETEns. maca'umn mr, Wnhinnon, h.c.

45 g, are interposed between the said hubs.

NITED STATES PATENT OFFICE.

WEBSTER M. ROBERTS, OF GAYLORD, KANSAS.

CU LTIVATO R.

SPECIFICATION forming part of Letters Patent No. 358,073, dated February 22, 1887.

Application filed April 13, 1886.

To aZZ whom it may concern.-

Be it known that I, WnBsrnR M. Ronnnrs, of Gaylord, in the county of Smith and State of Kansas, have invented certain new and useful Improvements in Cultivators; and I do hereby declare the following to be a full, clear, and exact description of the invention, that will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to that class of cultivators which employ gangs of rotary cultivators or shares; and it consists, chiefly, in a one of the gangs of rim-shares or rotary cultivators. Figs. 5, 6, 7,8 are detached views.

The frame A of my machine is made of angle-iron, and in two pieces bolted together, as shown in Figs. 7 and 8. This angle-iron gives greater strength and stiffness than the same amount of metal in a fiat or square bar. I make the lap of the two parts of the frame at the point of the king bolt E, where the greatest strength is required, because the hole for the king-bolt cuts the frame very badly.

Bolted to this iron frameis the central bar, B, on the rear end of which is mounted the drivers seat. The pole D and doubletree T are connected to the forward end of this bar.

A series of circular and dishing rim-cutters, g, are mounted on a square shaft, I, the hubs of said cutters having square perforations to fit said shaft, so that the cutters and shaft shall A series of spacing-spools, The hubs and spools are slipped loosely upon said axle between the head h at one end of said axle, at nut '5 at the other, and secured in place by turning the said nut. In case of the rotate together.

Serial No. 198,723. (No model.)

cutter may be removed and a new one slipped into place by removing nut 13.

Two swinging beams, G, are pivoted on king-bolts E, Fig. 1, and usually rest on the sway-bars a, which limit the downward motion of the inner ends of said beams. Thus these beams have a horizontal adj list-ability, as indicated in dotted lines, and also a vertical flexibility, to adapt the cutters to the undu lating surface of the ground. Adjusting tension-rods L extend from shanks K to the handlever M, by means of which the driver can swing the beams, and then set them by means of ratchet N and dog 0.-

The oblique position of the axles and rimcultivators to the line of travel makes the dirt fall backward through the rims and between the spokes, leaving the earth completely pulverized. This causes a suction in connection with the bevel of the dish of the cutters, and the pulverized earth falls over the rim of the cutters, instead of being drawn toward the cen ter of the machine, as would be the case with dishing cutters having no central opening, and thus iny machine leaves the earth well pulverized, nearly level, and in an excellent condition for the growth of the crop.

The standards or shanks K are preferably cast in one piece, with a platform at the top having bolt-holes therein to secure the beams G in place on said platform, as shown in Fig. 2, and the lower ends of the standards are bifurcated to receive and hold a wooden block and journal-box, m, with journalbearing, re tained in position by means of projection t, as seen in Fig. 5, and easily removed and replaced when worn out.

One of the beams G G is set farther forward than the other, so as to keep the series of cutters clear of trash, which is thus prevented from being caught between the two inner cutters, and thus clogging the machine.

The pole D is fastened to bar 13 by means of twostaplcs or loops, R and S. The rear end of the pole is pivoted in loop S, and loop Ris long enough to allow the pole considerable vertical play therein, thus preventing the frame from jerkingthe pole and team in pass ing undulations in the ground.

5o breakage of one of said rim-cutters, the broken I do not broadly claim either the vertically- I00 vibrating gangs of cultivatorcutters or culvators, said axles pivoted to the frame where tivator-frames made of angle-irons, but limit the two sections join and lap, whereby the ver- 15 my invention to the construction and combitical vibrations and horizontal adjustments of nation of devices by means of which my donthe axles are allowed and the consequent wear 5 bIe series of rim-cutters are vibrated and to at thepivotal points greatly reduced, substanthe specific frame, herein described, having tially as set forth. joints at the king-bolts to unite the two pieces In testimony whereofI aflix my signature in 20 of the frame. presence of two witnesses.

I claim 7 10 As animprovenient in cultivators, the com- EBSTER ROBERTS bination of the described angle-iron frame Vitnesses: made in two pieces with the two axles, each G. It, PARKER,

provided with a series of dishing rim-culti- A. O. HATTER. 

